Thanks to the helpful users over on the official FarmVille forums, we've found that as of right now, if you're one of the lucky players that has access to the English Countryside, you will be able to purchase five different animals from the English Countryside-specific Marketplace.
User SammyJames posted this screen-shot of the in-game store, and we can see the following animals for sale (and look, some even cost coins!). Note: There are conflicting reports from players as to the prices of the Ewes and Rams. Some report that Ewes cost 10 Farm Cash, while Rams cost 25 Farm Cash, but as this is a picture from a working farm, we'll go with that for now.
Ewe (Navy) - 25 Farm Cash
Ewe (Pastel Pink) - 25 Farm Cash
Ram (Purple Dots) - 30 Farm Cash
Pub Cat - 5,000 coins
English Spot Rabbit - 1,200 coins